121221201100222 has 8 divisors (see below), whose sum is σ = 183706356306816. Its totient is φ = 59985748997952.

The previous prime is 121221201100193. The next prime is 121221201100229. The reversal of 121221201100222 is 222001102122121.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 121221201100222.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121221201100229) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 312425775838 + ... + 312425776225.

It is an arithmetic number, because the mean of its divisors is an integer number (22963294538352).

Almost surely, 2^{121221201100222} is an apocalyptic number.

121221201100222 is a deficient number, since it is larger than the sum of its proper divisors (62485155206594).

121221201100222 is an equidigital number, since it uses as much as digits as its factorization.

121221201100222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 624851552162.

The product of its (nonzero) digits is 128, while the sum is 19.

Adding to 121221201100222 its reverse (222001102122121), we get a palindrome (343222303222343).

The spelling of 121221201100222 in words is "one hundred twenty-one trillion, two hundred twenty-one billion, two hundred one million, one hundred thousand, two hundred twenty-two".